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September 30, 2025Journal of Geophysical Research Atmospheres

Formation of Oxidized Organic Aerosols in Winter Haze in a Megacity of Southwest China: Implication for the Importance of Biomass Burning

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Authors

HTHeng‐Jing TangZLZhenliang LiMTMi Tian

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Overview

Observational analysis identified biomass burning as a key driver for secondary OA formation in haze, suggesting pollution control measures.

Key Points

  • Organic aerosol comprised 48.8% of NR-PM 2.5, with MO-OOA as a key component at 55.8%.
  • Photochemical oxidation was essential in forming MO-OOA, while LO-OA responded to both water processing and light.
  • The study utilized a time-of-flight aerosol chemical speciation monitor for detailed particle analysis.
  • Findings imply that biomass burning significantly affects haze formation and necessitates regulatory actions.

Cite This Study

Tang et al. (2025) studied this question.

synapsesocial.com/papers/68dc1e358a7d58c25ebb189fhttps://doi.org/10.1029/2025jd044028
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